Almost no light in real life is completely white (which oddly enough is the most used color for CG). Real light is measured in degrees Kelvin, which (few people know) can be directly be used in Cycles with the Blackbody node (Add>Converter>Blackbody).

#4: Emphasize Your Subject

Lighting plays a huge role in what your viewer will focus on when they see the render. And if everything is lit the same, then nothing is important!

So look at your scene and decide what the subject is - then make sure it receives more light than the rest of the scene.

#5: Add Textures to Your Lights

Although rarely used by cg artists, adding textures to your lighting can add an extra element of interest to your scene.

This is sometimes referred to as the light throw, or implied lighting. Which is basically implying that something is happening outside of the frame, without actually showing it.

#6: Animate Your Lights

This one obviously only applies to animation, but it's rarely used and it's super powerful.

Animating the direction, position, size, strength or color can have a dramatic effect on the animation. It can be used to convey the passing of time, signify the moment a character makes a dramatic change or realization or bring something to attention. Consider how lighting can be used to tell the story of your next animation!